Pinionv-pullin g mechanism



A. J.'HUNTER.

. PINION PULLING MECHANISM.

APPLICATION II'LED JAN. 19, 1909.

Patented Nov. 26, 191 2.

2 NETS-$313121 1.

A. J. HUNTER. PINION PULLING MECHANISM.

7 APPLICATION FILED JAN.19, 1909. I 1 1,045, .4 6 Patented Nov. 26, 1912.

1 2 SHEETSSHEET 2.

ed in the invention relates UNITED STAT-Es PATENT ALFREDJ'. HUNTER,'0F BAYONNE, NEW JERSEY, ASSIGNOR T0 GEORGE E. AUSTIN, OT

BROOKLYN, NEW YORK.

To all whom it may concern: V p

' Be 't known that I, Amen J. HUNTER, a; citizen of the United States, residing at; Bayonne, county oflludson, and State of; New Jersey, have invented certain new and useful Improvements in Pinion-Pulling Mechanism, fully described and representfollowing specification and the accompanying drawings, forming a part of the same. to mechanism for removin pinions, pulleys, sleeves, and the like from shafts or the like with which they have a drivin or driven connection.

It is the ob ect of the present invention to provide mechanism which will quickly and easily remove the pinions or the like without any-danger of breakage or other injury thereto or the shaft or the like on whic they may be mounted, and it is a further object of the invention to provide mechanism of this character so mounted as to be readily portable so that it may be conveniently and quickly moved from one place of use to another.

As a full understanding of the improvemen'ts of the present invention can best be had from -a -,detailed description of an organization ernbodying the same, such description will now be 'ven in connection with the accompanying drawings, in Which I Figure l'is a side elevation of a pinion removing mechanism embodying the improvements of the present invention, the same being shown as in position to remove a pinion from the shaft of an armature. Fig. 2 is a. section on the line 2 of Fig. 1, omitting the armature and carriage therefor shown in Fig. 1. Fig. 3 is a plan view of the pinion removing mechanism, thefpinion and a portion of the shaft of the armature of Fig. 1 being also shown. Fig. dis a vertical longitudinal'section of Fig. 3,- but on an enlarged scale; and Fig. fais-averticalsection on the line 5 of Fig. 4.

Referring to said drawings, 1 is a carriage upon which isv supported a sleeve 2, by means of a vertically adjustable two-part bracket '3, this sleeve 2 constituting, with other parts hereinafter described, what may be termed the pinion engagin and pulling member of the apparatus. ounted in. the

sleeve 2 is a rod 4. threaded at its outer end,

Specificationof Letters Patent. Application filed January 19, 18(19. Ser1al No. 478,097.

. secured to the'sleeve' 2. This Patented Nov. 26, 1912.

and ing it, this rod constitutingthe shalft, engaging and pushing member of the apparatus, acting in. opposition to the ullingilm'ember 2. The threaded portion 0 said is engaged by a nut 5 to which is pivotedjone end of each of a of each of said arms 6 formin a strap receiving an eccentric 7 surroun "ng stud'8 nut K with the other parts referred to constitutesoiie of the driving means whereby the relativej'p ushing and pulling movements of the two'niembers. 2, 4., is effected, on rotation of rod 4."O,g1er driving means, which will now be descri ed are also provided for eflectin s'u'chf movenients inde endently of'rotatlon offrod 4. Keyed to tli when thrown down, as shown in Fi 1, 4, ,r'otates the eccentrics 7 to move the 11 m 5 inwardly in alongitudinal direction and rela' tively to member 2 by means of thej'arms'fi.

This movement of the nut 5 also moires the bar or red 4.- in the same direction, the, threads .of the nut and 'rod' 4 formin ja lock to accomplish this. The nut 5 is he djfrom rotation as the rod 4 is rotated, by 10 provided with a hand wheel'gfbr rotatpair of arms 6, the other ende eccentric 7 is a lever 9, which secured to the nut embracing a fingerfjll secured to the sleeve 2, the finger lljsliding between the pins 10 as thebar 4 and int 5 are moved longitudinally. The sleeve 2 is provided with two lugs or cars 12 to whlch are pivoted, at 13, arms 14 bent down- Wardly at their outer end to provide hooks adapted to take over a d grasp a mounted on and secure to the shat, for example, of an armature 15, which, for the removal of the pinion 5 is or carriage 16.

The hooked ends of arms 14 are, 'as will be observed, diametrically opposite so as'to engage the pinion 5 at. diametrically opposite points and thus pull upon the inion- 1n, l ins parallel to the'latters axis; 11 liability of,-

carried in a truck ranting or tilting of the pinion under' 'the pull of arms 14 and possible injury to it or its shaft resulting therefrom, is avoided. The inner ends of'the arms 14 are provided with a hub 17 screw threaded to be engage b adjustin screws 18 rovided with suitable handw eels, the en s of the-said screws bearing against the surface of the sleeve 2: By this means it will be seen that the outer ends of the arms, 14 can be raised or lowered a nut 22 seated in so as to embrace pinions or pulleys of different diameters. The sleeve 2, and with it, of course, the rod 4 and parts carried by said sleeve and rod, is adjustable sidewise or vertically on carriage 1 by; means .of a

threaded rod 1-9 to which is rigidly fixed a suitable hand'wheel 20, and which engages a threaded boss 21 formed on the lower .portion of the. bracket 3; the purpose of this sldewise-adjustment being to raise or lower" the sleeve 2 androd 4: and parts carried by them into alinement with the axes of the shaft and pinion on which they are to operate. The upper portion of the bracket 3 is boltedto' the sleeve 2, and the two parts of the bracket are-clamped together by a bolt threaded into the upper partof ,the bracket and provided with a clamping projection bearin against the outer face'bf the lower portion of the bracket which latter is slotted so as to all,ow of a vertical movement of the upper part of the bracket andsleeve 2 for the adjustment just referred to when bolt 25 is loosened. The. upper part of the threaded rod 19 is provided with a correspondingly sha ed recess in upper bracket 3 to prevent vertical movement of the rod '19 when turned by the end of the rod .2 is provided with a perforation in which is mountfed a spring pressed plunger 23, which is being thus brought to The threaded bar 4 '9 held therein by a the pinion and shaft being hardened steel plate 2-1, said plunger havin a conical shaped outer end which en ages t e usual conical recess in the end of t e shaft, for example, of an armature, r

Theoperation is as follows: The pinion pulling device may, by reason of its mountmg in carriage 1, be moved 'up to the shaft and pinion to be operated-on, or the'latter may,-'- as shown, be moved up to the former,

mounted temporarily in a suitable carrier ether, carriage 1 will be moved forward untll the arms 14 are in a position to engage the inner side of the pinion 5, their hooked ends being moved down into such position by the turning of screws 18. is then turned by its hand wheel until its inner end abuts against the-end of the shaft of the armature. The lever 9 is then thrown down, when the arms 6 will be moved inwardly. by the eccentric 7,

the result of this being to force the shaft of the armature away from the slee e 2, and away from the pinion, which is, of course, held in its original position by means-of the arms 14. If this one movement is not sufilcient to loosen the pinion from the shaft sufiiciently for its removal therefrom by hand or by turning rod 4 by hand to move nut 5 and sleeve 2, with the latters arms 1i, rearwardly along said rod 4, the rod 4 is rotated again by the hand wheel until its inner end abu s against the shaft of the armature,

out of alinement horizontally 4 pulling upon the as 16. The two- 'is effected on -ber comprising a nut threaded to the latter and the operation as just stated is repeated When the pinion is thus loosened it may he slipped off the shaft by hand or, as just indicated, by manually turning rod 4. Should the axes of the shaft and pinion to be operated upon, either when mounted on truck 16 or in the machine to which they belong, be with the rod 4, the'latter and member 2 may be adjusted sidewise or vertically as heretofore described to bring them into alinement with the axes of the shaft and pinion.

What is claimed is 1. In a machine for pullingpinions or the like from shafts or the like, the combination oftvzo endwise relatively movable members, one for pushing against the end of the shaft or the like and the other for pinion or the like, connections between the two members whereby such movement is effected, and a manually operable lever and eccentric on the pulling member andoperating onthe pushing member for also efiecting such movement, substantially as described.

2. In a machine for pulling pinions or the like from shafts or the like, the combination of two endwise relatively movable members, one of which is rotary and for pushing against the end of the shaft or the the other for pulling upon the pinion or the like, a screw threaded connection between the two members by which such relative movement is efiected on rotation of the pushing member and additional means, including an eccentric and a manually operable lever for actuating it, for also efiecting suchmovement, substantially as described.

3. In a machine for pulling pinions or the like from shafts or the like, the combina tion of two endwise relatively movable memhers, one of which is rotary and for pushing a ainst the end of the shaft or the like and the other for pulling upon the pinion or the like, connections between the two members by which such relative movement rotation of the pushing memand having a link connection with the pulling member, and eccentric mounted on the latter and connected with said linked connection for effecting suchmovement independently of rotation of the pushing member, substantially as described.

4'. Ina machine for pulling pinions or the like from shafts or the like, the combination of two endwise relatively movable members, one for pushing against the end of the shaft or upon the pinion or the like, a two-part support for said two members comprising a art in which said members are mounted End which is adjustable relatively to the other part to adjust said members bodily and a manually operable lever' like and 5 the like and the other for pulling 12E relative movement of the two members is efiected, substantially as described.

5. In a machine for pulling pinions or the like from shaftscor the like, the combination of two endwise relatively movable mem-,

bers, onefor pushing against the end 6f the shaft orthe like and the other for pulling upon the pinion or the like,-a portable carner for said two members provided. with a two-'partsupport for said members comprising a part in which said members are mounted and which is adjustable relatively to the other part to adjust said members bodily sidewise into alinement with the axes of the shaft or-thelike and pinion or the like to. be operated upon, and means whereby the relative movement of the two members is effected, substantially as described.

6. In a machine for pullin pinions or the like from shafts or the like, t e combination of pushing member 4, pulling member 2, provided with pinion grasping arms 14 and means for adjusting the latter, threaded nut 5, driving connections between it and the members 2, 4, manually operable lever 9 and eccentrics 7 mounted in member 2, and arms 6 connecting said eccentrics and nut 5, substantially as described.

In testimony whereof, I have hereunto set my hand, In the presence of two sub scrlbing witnesses.

ALFRED J. HUNTER, lVitnesses:

J. A. GRAVES, A. WHITE. 

